Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 4hxi_B.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): GLU 2.A N ASP 1.A OD1 no hydrogen 2.454 N/A ASN 6.A ND2 GLU 2.A O no hydrogen 2.620 N/A SER 7.A N LYS 3.A O no hydrogen 3.159 N/A SER 7.A OG LYS 3.A O no hydrogen 3.478 N/A SER 7.A OG TYR 4.A O no hydrogen 2.607 N/A ILE 8.A N TYR 4.A O no hydrogen 2.977 N/A TRP 9.A N VAL 5.A O no hydrogen 2.863 N/A ASP 10.A N ASN 6.A O no hydrogen 2.942 N/A LEU 12.A N ILE 8.A O no hydrogen 2.981 N/A LYS 13.A N TRP 9.A O no hydrogen 2.833 N/A ASN 14.A N ASP 10.A O no hydrogen 2.938 N/A ALA 15.A N LEU 11.A O no hydrogen 2.905 N/A ILE 16.A N LEU 12.A O no hydrogen 2.896 N/A GLN 17.A N LYS 13.A O no hydrogen 2.928 N/A GLU 18.A N ASN 14.A O no hydrogen 2.922 N/A ILE 19.A N ALA 15.A O no hydrogen 2.883 N/A GLN 20.A N ILE 16.A O no hydrogen 2.942 N/A ARG 21.A N GLU 18.A O no hydrogen 2.942 N/A ARG 21.A NH1 GLU 18.A OE2 no hydrogen 3.492 N/A LYS 22.A N ILE 19.A O no hydrogen 3.250 N/A ASN 23.A ND2 GLU 18.A OE2 no hydrogen 2.115 N/A SER 25.A N ASN 24.A OD1 no hydrogen 2.596 N/A LEU 27.A N ASN 24.A O no hydrogen 2.945 N/A GLU 31.A N SER 28.A OG no hydrogen 3.410 N/A LEU 32.A N SER 28.A O no hydrogen 3.303 N/A TYR 33.A N PHE 29.A O no hydrogen 2.890 N/A ARG 34.A N GLU 30.A O no hydrogen 2.916 N/A ARG 34.A NH1 GLU 30.A OE2 no hydrogen 2.763 N/A ASN 35.A N GLU 31.A O no hydrogen 2.890 N/A ASN 35.A ND2 GLU 31.A O no hydrogen 2.523 N/A ALA 36.A N LEU 32.A O no hydrogen 2.934 N/A TYR 37.A N TYR 33.A O no hydrogen 2.899 N/A THR 38.A N ARG 34.A O no hydrogen 2.887 N/A THR 38.A OG1 ASN 35.A O no hydrogen 2.911 N/A MET 39.A N ASN 35.A O no hydrogen 2.943 N/A VAL 40.A N ALA 36.A O no hydrogen 2.945 N/A LEU 41.A N TYR 37.A O no hydrogen 2.893 N/A HIS 42.A N MET 39.A O no hydrogen 3.350 N/A LYS 43.A N VAL 40.A O no hydrogen 3.008 N/A HIS 44.A N MET 39.A O no hydrogen 3.302 N/A HIS 44.A ND1 HIS 42.A O no hydrogen 3.212 N/A LYS 47.A NZ ASN 6.A OD1 no hydrogen 3.389 N/A LEU 48.A N HIS 44.A O no hydrogen 3.228 N/A TYR 49.A N GLY 45.A O no hydrogen 2.911 N/A TYR 49.A OH GLU 112.A O no hydrogen 2.235 N/A THR 50.A N GLU 46.A O no hydrogen 2.908 N/A THR 50.A OG1 GLU 46.A O no hydrogen 3.061 N/A GLY 51.A N LYS 47.A O no hydrogen 2.890 N/A LEU 52.A N LEU 48.A O no hydrogen 2.922 N/A ARG 53.A N TYR 49.A O no hydrogen 2.928 N/A GLU 54.A N THR 50.A O no hydrogen 2.920 N/A VAL 55.A N GLY 51.A O no hydrogen 2.909 N/A VAL 56.A N LEU 52.A O no hydrogen 2.956 N/A THR 57.A N ARG 53.A O no hydrogen 2.899 N/A THR 57.A OG1 ARG 53.A O no hydrogen 2.376 N/A GLU 58.A N GLU 54.A O no hydrogen 2.920 N/A HIS 59.A N VAL 55.A O no hydrogen 2.954 N/A LEU 60.A N VAL 56.A O no hydrogen 2.936 N/A ILE 61.A N THR 57.A O no hydrogen 2.899 N/A ASN 62.A N GLU 58.A O no hydrogen 2.923 N/A LYS 63.A N HIS 59.A O no hydrogen 3.327 N/A LYS 63.A NZ ASP 67.A OD2 no hydrogen 2.495 N/A VAL 64.A N HIS 59.A O no hydrogen 3.475 N/A ARG 65.A N LEU 60.A O no hydrogen 3.001 N/A ARG 65.A NE GLN 125.A O no hydrogen 3.398 N/A ASP 67.A N LYS 63.A O no hydrogen 2.661 N/A VAL 68.A N VAL 64.A O no hydrogen 2.919 N/A LEU 69.A N GLU 66.A O no hydrogen 3.192 N/A ASN 70.A N GLU 66.A O no hydrogen 3.061 N/A ASN 70.A ND2 GLU 66.A O no hydrogen 2.655 N/A SER 71.A OG VAL 68.A O no hydrogen 3.057 N/A ASN 74.A N SER 71.A O no hydrogen 3.317 N/A THR 79.A N ASN 75.A O no hydrogen 2.921 N/A THR 79.A OG1 ASN 75.A O no hydrogen 2.586 N/A LEU 80.A N PHE 76.A O no hydrogen 2.921 N/A ASN 81.A N LEU 77.A O no hydrogen 2.897 N/A GLN 82.A N GLN 78.A O no hydrogen 2.909 N/A GLN 82.A NE2 ASP 86.A OD2 no hydrogen 3.403 N/A ALA 83.A N THR 79.A O no hydrogen 2.919 N/A TRP 84.A N LEU 80.A O no hydrogen 2.887 N/A ASN 85.A N ASN 81.A O no hydrogen 2.906 N/A ASP 86.A N GLN 82.A O no hydrogen 2.919 N/A HIS 87.A N ALA 83.A O no hydrogen 2.909 N/A GLN 88.A N TRP 84.A O no hydrogen 2.962 N/A THR 89.A N ASN 85.A O no hydrogen 2.928 N/A THR 89.A OG1 ASN 85.A O no hydrogen 3.157 N/A ALA 90.A N ASP 86.A O no hydrogen 2.927 N/A MET 91.A N HIS 87.A O no hydrogen 2.915 N/A VAL 92.A N GLN 88.A O no hydrogen 2.948 N/A ILE 94.A N ALA 90.A O no hydrogen 2.941 N/A ARG 95.A N MET 91.A O no hydrogen 2.917 N/A ASP 96.A N VAL 92.A O no hydrogen 2.924 N/A ILE 97.A N MET 93.A O no hydrogen 2.947 N/A LEU 98.A N ILE 94.A O no hydrogen 3.233 N/A ASP 102.A N LEU 98.A O no hydrogen 2.969 N/A ARG 103.A N MET 99.A O no hydrogen 2.915 N/A VAL 104.A N TYR 100.A O no hydrogen 3.249 N/A VAL 106.A N MET 101.A O no hydrogen 3.270 N/A GLN 107.A N VAL 104.A O no hydrogen 3.470 N/A ASN 109.A ND2 TYR 105.A O no hydrogen 2.420 N/A ASN 110.A N GLN 107.A O no hydrogen 3.164 N/A VAL 111.A N VAL 106.A O no hydrogen 3.186 N/A VAL 114.A N ASP 102.A OD1 no hydrogen 2.858 N/A ASN 116.A ND2 ASN 113.A OD1 no hydrogen 2.680 N/A LEU 117.A N ASN 113.A O no hydrogen 2.872 N/A GLY 118.A N VAL 114.A O no hydrogen 2.955 N/A LEU 119.A N TYR 115.A O no hydrogen 2.902 N/A ILE 120.A N ASN 116.A O no hydrogen 2.897 N/A ILE 121.A N LEU 117.A O no hydrogen 2.898 N/A PHE 122.A N GLY 118.A O no hydrogen 2.927 N/A ARG 123.A N LEU 119.A O no hydrogen 2.893 N/A ARG 123.A NE ASP 124.A OD1 no hydrogen 3.182 N/A ASP 124.A N ILE 120.A O no hydrogen 2.916 N/A GLN 125.A N ILE 121.A O no hydrogen 2.905 N/A VAL 126.A N PHE 122.A O no hydrogen 3.113 N/A VAL 127.A N PHE 122.A O no hydrogen 3.398 N/A ARG 128.A N ARG 123.A O no hydrogen 2.820 N/A ARG 128.A NH2 GLU 178.A OE2 no hydrogen 2.953 N/A TYR 129.A N VAL 126.A O no hydrogen 3.173 N/A ASP 134.A N GLY 130.A O no hydrogen 3.490 N/A HIS 135.A N CYS 131.A O no hydrogen 2.964 N/A LEU 136.A N ILE 132.A O no hydrogen 2.885 N/A ARG 137.A N ARG 133.A O no hydrogen 2.946 N/A ARG 137.A NH1 ASP 134.A OD1 no hydrogen 3.199 N/A GLN 138.A N ASP 134.A O no hydrogen 2.919 N/A THR 139.A N HIS 135.A O no hydrogen 2.898 N/A THR 139.A OG1 HIS 135.A O no hydrogen 2.554 N/A LEU 140.A N LEU 136.A O no hydrogen 2.950 N/A LEU 141.A N ARG 137.A O no hydrogen 2.948 N/A ASP 142.A N GLN 138.A O no hydrogen 2.907 N/A MET 143.A N THR 139.A O no hydrogen 2.928 N/A ILE 144.A N LEU 140.A O no hydrogen 2.940 N/A ALA 145.A N LEU 141.A O no hydrogen 2.930 N/A ARG 146.A N ASP 142.A O no hydrogen 2.886 N/A GLU 147.A N MET 143.A O no hydrogen 2.932 N/A ARG 148.A N ILE 144.A O no hydrogen 2.930 N/A ARG 148.A NH1 SER 188.A OG no hydrogen 2.954 N/A ARG 148.A NH2 SER 188.A OG no hydrogen 2.592 N/A ARG 148.A NH2 GLU 219.A OE1 no hydrogen 3.034 N/A LYS 149.A N ALA 145.A O no hydrogen 2.937 N/A LYS 149.A N ARG 146.A O no hydrogen 2.908 N/A GLY 150.A N GLU 147.A O no hydrogen 3.361 N/A GLU 151.A N ARG 146.A O no hydrogen 3.154 N/A ARG 155.A NE GLU 147.A OE2 no hydrogen 2.401 N/A GLY 156.A N ASP 154.A OD1 no hydrogen 3.239 N/A ARG 159.A N ARG 155.A O no hydrogen 2.923 N/A ASN 160.A N GLY 156.A O no hydrogen 2.912 N/A ALA 161.A N ALA 157.A O no hydrogen 2.912 N/A CYS 162.A N ILE 158.A O no hydrogen 2.934 N/A CYS 162.A SG ILE 158.A O no hydrogen 3.302 N/A GLN 163.A N ARG 159.A O no hydrogen 2.932 N/A MET 164.A N ASN 160.A O no hydrogen 2.893 N/A LEU 165.A N ALA 161.A O no hydrogen 2.944 N/A MET 166.A N CYS 162.A O no hydrogen 2.932 N/A ILE 167.A N GLN 163.A O no hydrogen 2.892 N/A LEU 168.A N MET 164.A O no hydrogen 2.898 N/A GLY 169.A N LEU 165.A O no hydrogen 2.976 N/A GLY 169.A N MET 166.A O no hydrogen 3.273 N/A LEU 170.A N ILE 167.A O no hydrogen 2.944 N/A ARG 173.A NE SER 230.A OG no hydrogen 3.265 N/A ARG 173.A NH1 GLU 181.A OE2 no hydrogen 3.103 N/A ARG 173.A NH2 GLU 181.A OE1 no hydrogen 2.369 N/A ARG 173.A NH2 SER 230.A OG no hydrogen 2.589 N/A TYR 176.A OH THR 231.A OG1 no hydrogen 2.483 N/A GLU 177.A N ARG 173.A O no hydrogen 2.519 N/A GLU 178.A N SER 174.A O no hydrogen 2.925 N/A ASP 179.A N VAL 175.A O no hydrogen 2.918 N/A PHE 180.A N TYR 176.A O no hydrogen 3.245 N/A GLU 181.A N TYR 176.A O no hydrogen 3.130 N/A ALA 182.A N GLU 177.A O no hydrogen 3.042 N/A PHE 184.A N PHE 180.A O no hydrogen 3.101 N/A LEU 185.A N GLU 181.A O no hydrogen 2.885 N/A GLU 186.A N ALA 182.A O no hydrogen 2.947 N/A MET 187.A N PRO 183.A O no hydrogen 2.925 N/A SER 188.A N PHE 184.A O no hydrogen 2.904 N/A SER 188.A OG PHE 184.A O no hydrogen 2.643 N/A ALA 189.A N LEU 185.A O no hydrogen 2.908 N/A GLU 190.A N GLU 186.A O no hydrogen 2.984 N/A PHE 191.A N MET 187.A O no hydrogen 2.951 N/A PHE 192.A N SER 188.A O no hydrogen 2.876 N/A GLN 193.A N ALA 189.A O no hydrogen 2.956 N/A MET 194.A N GLU 190.A O no hydrogen 2.970 N/A GLU 195.A N PHE 191.A O no hydrogen 2.938 N/A SER 196.A N PHE 192.A O no hydrogen 2.871 N/A SER 196.A OG GLN 193.A O no hydrogen 2.665 N/A SER 196.A OG HIS 247.A NE2 no hydrogen 3.000 N/A GLN 197.A N GLN 193.A O no hydrogen 2.998 N/A LYS 198.A NZ GLU 195.A OE1 no hydrogen 3.056 N/A LYS 198.A NZ GLU 195.A OE2 no hydrogen 3.139 N/A PHE 199.A N GLU 195.A O no hydrogen 2.953 N/A LEU 200.A N SER 196.A O no hydrogen 2.904 N/A ALA 201.A N GLN 197.A O no hydrogen 2.924 N/A GLU 202.A N LYS 198.A O no hydrogen 2.962 N/A ASN 203.A N PHE 199.A O no hydrogen 2.947 N/A SER 204.A OG SER 206.A OG no hydrogen 3.095 N/A ALA 205.A N SER 257.A OG no hydrogen 2.390 N/A SER 206.A OG SER 204.A OG no hydrogen 3.095 N/A TYR 208.A OH LEU 243.A O no hydrogen 2.477 N/A ILE 209.A N ALA 205.A O no hydrogen 2.908 N/A LYS 210.A N SER 206.A O no hydrogen 2.963 N/A LYS 211.A N VAL 207.A O no hydrogen 2.921 N/A VAL 212.A N TYR 208.A O no hydrogen 2.902 N/A GLU 213.A N ILE 209.A O no hydrogen 2.980 N/A ALA 214.A N LYS 210.A O no hydrogen 2.934 N/A ARG 215.A N LYS 211.A O no hydrogen 2.899 N/A ILE 216.A N VAL 212.A O no hydrogen 2.930 N/A ASN 217.A N GLU 213.A O no hydrogen 2.985 N/A ASN 217.A ND2 GLU 213.A O no hydrogen 3.123 N/A GLU 218.A N ALA 214.A O no hydrogen 2.935 N/A GLU 219.A N ARG 215.A O no hydrogen 2.962 N/A ILE 220.A N ILE 216.A O no hydrogen 2.934 N/A GLU 221.A N ASN 217.A O no hydrogen 2.953 N/A ARG 222.A N GLU 218.A O no hydrogen 2.920 N/A ARG 222.A NE GLU 219.A OE1 no hydrogen 3.113 N/A ARG 222.A NH2 GLU 218.A OE2 no hydrogen 2.820 N/A ARG 222.A NH2 GLU 219.A OE2 no hydrogen 3.288 N/A VAL 223.A N GLU 219.A O no hydrogen 2.940 N/A MET 224.A N ILE 220.A O no hydrogen 2.974 N/A HIS 225.A N GLU 221.A O no hydrogen 2.904 N/A CYS 226.A N ARG 222.A O no hydrogen 3.025 N/A ASP 228.A N TYR 176.A OH no hydrogen 3.177 N/A SER 230.A N ASP 228.A OD2 no hydrogen 2.681 N/A SER 230.A OG ASP 228.A OD2 no hydrogen 2.526 N/A THR 231.A N ASP 228.A O no hydrogen 3.110 N/A THR 231.A OG1 TYR 176.A OH no hydrogen 2.483 N/A THR 231.A OG1 GLU 181.A OE1 no hydrogen 3.414 N/A THR 231.A OG1 ASP 228.A O no hydrogen 3.161 N/A GLU 232.A N LYS 229.A O no hydrogen 2.937 N/A ILE 235.A N THR 231.A O no hydrogen 3.345 N/A VAL 236.A N GLU 232.A O no hydrogen 3.291 N/A LYS 237.A N GLU 233.A O no hydrogen 3.185 N/A VAL 238.A N PRO 234.A O no hydrogen 3.119 N/A VAL 239.A N ILE 235.A O no hydrogen 2.849 N/A GLU 240.A N VAL 236.A O no hydrogen 2.825 N/A ARG 241.A N LYS 237.A O no hydrogen 3.083 N/A GLU 242.A N VAL 238.A O no hydrogen 2.878 N/A LEU 243.A N VAL 239.A O no hydrogen 2.957 N/A ILE 244.A N GLU 240.A O no hydrogen 3.138 N/A SER 245.A N GLU 240.A O no hydrogen 2.924 N/A LYS 246.A N ARG 241.A O no hydrogen 3.045 N/A LYS 246.A NZ GLU 242.A OE2 no hydrogen 2.648 N/A HIS 247.A N ILE 244.A O no hydrogen 3.154 N/A ILE 251.A N HIS 247.A O no hydrogen 2.869 N/A VAL 252.A N MET 248.A O no hydrogen 2.969 N/A GLU 253.A N ARG 249.A O no hydrogen 2.971 N/A SER 257.A N MET 254.A O no hydrogen 3.296 N/A GLY 258.A N MET 254.A O no hydrogen 3.050 N/A LEU 259.A N VAL 252.A O no hydrogen 2.996 N/A MET 262.A N GLY 258.A O no hydrogen 3.010 N/A LEU 263.A N LEU 259.A O no hydrogen 2.905 N/A LYS 264.A N VAL 260.A O no hydrogen 2.930 N/A ASN 265.A N HIS 261.A O no hydrogen 3.228 N/A GLY 266.A N LEU 263.A O no hydrogen 3.185 N/A LYS 267.A N MET 262.A O no hydrogen 2.816 N/A LEU 271.A N LYS 267.A O no hydrogen 3.434 N/A GLY 272.A N THR 268.A O no hydrogen 2.900 N/A CYS 273.A N GLU 269.A O no hydrogen 2.918 N/A CYS 273.A SG GLU 269.A O no hydrogen 3.236 N/A MET 274.A N ASP 270.A O no hydrogen 2.910 N/A TYR 275.A N LEU 271.A O no hydrogen 2.909 N/A TYR 275.A OH ASP 330.A OD2 no hydrogen 2.850 N/A LYS 276.A N GLY 272.A O no hydrogen 2.907 N/A LEU 277.A N CYS 273.A O no hydrogen 2.913 N/A PHE 278.A N MET 274.A O no hydrogen 2.899 N/A SER 279.A N TYR 275.A O no hydrogen 2.917 N/A SER 279.A OG LYS 276.A O no hydrogen 2.843 N/A ARG 280.A N LEU 277.A O no hydrogen 3.153 N/A GLY 284.A N VAL 281.A O no hydrogen 3.448 N/A LYS 286.A NZ GLU 290.A OE2 no hydrogen 2.857 N/A THR 287.A N ASN 283.A O no hydrogen 2.852 N/A THR 287.A OG1 ASN 283.A O no hydrogen 2.502 N/A MET 288.A N GLY 284.A O no hydrogen 2.970 N/A CYS 289.A N LEU 285.A O no hydrogen 2.911 N/A CYS 289.A SG LEU 285.A O no hydrogen 3.273 N/A GLU 290.A N LYS 286.A O no hydrogen 2.908 N/A CYS 291.A N THR 287.A O no hydrogen 2.975 N/A MET 292.A N MET 288.A O no hydrogen 2.943 N/A SER 293.A N CYS 289.A O no hydrogen 2.894 N/A SER 293.A OG ASP 340.A OD1 no hydrogen 2.772 N/A SER 294.A N GLU 290.A O no hydrogen 2.953 N/A TYR 295.A N CYS 291.A O no hydrogen 2.977 N/A LEU 296.A N MET 292.A O no hydrogen 2.857 N/A ARG 297.A N SER 293.A O no hydrogen 2.909 N/A ARG 297.A NE ASP 340.A OD1 no hydrogen 2.928 N/A ARG 297.A NH2 GLY 339.A O no hydrogen 3.534 N/A GLU 298.A N SER 294.A O no hydrogen 2.956 N/A GLN 299.A N TYR 295.A O no hydrogen 2.957 N/A GLY 300.A N LEU 296.A O no hydrogen 2.903 N/A LYS 301.A N ARG 297.A O no hydrogen 2.907 N/A ALA 302.A N GLU 298.A O no hydrogen 2.942 N/A LEU 303.A N GLN 299.A O no hydrogen 2.920 N/A LEU 303.A N GLY 300.A O no hydrogen 2.999 N/A VAL 304.A N GLY 300.A O no hydrogen 2.924 N/A GLN 310.A N ASP 307.A O no hydrogen 3.110 N/A GLN 310.A NE2 ASP 314.A OD2 no hydrogen 3.443 N/A GLY 311.A N ASP 307.A O no hydrogen 3.045 N/A LEU 312.A N TYR 308.A O no hydrogen 2.967 N/A ASP 313.A N ARG 309.A O no hydrogen 2.891 N/A ASP 314.A N GLN 310.A O no hydrogen 2.916 N/A LEU 315.A N GLY 311.A O no hydrogen 2.944 N/A LYS 316.A N LEU 312.A O no hydrogen 2.909 N/A SER 317.A N ASP 313.A O no hydrogen 2.901 N/A SER 317.A OG ASP 313.A O no hydrogen 2.542 N/A ARG 318.A N ASP 314.A O no hydrogen 2.911 N/A ARG 318.A NH2 LEU 263.A O no hydrogen 3.263 N/A ARG 318.A NH2 TYR 295.A OH no hydrogen 2.727 N/A PHE 319.A N LEU 315.A O no hydrogen 2.940 N/A ASP 320.A N LYS 316.A O no hydrogen 2.899 N/A ARG 321.A N SER 317.A O no hydrogen 2.889 N/A PHE 322.A N ARG 318.A O no hydrogen 2.968 N/A LEU 323.A N PHE 319.A O no hydrogen 2.902 N/A LEU 324.A N ASP 320.A O no hydrogen 2.905 N/A GLU 325.A N ARG 321.A O no hydrogen 2.918 N/A SER 326.A N PHE 322.A O no hydrogen 2.784 N/A SER 326.A OG THR 268.A O no hydrogen 3.444 N/A PHE 327.A N PHE 322.A O no hydrogen 3.180 N/A ASN 329.A N LEU 323.A O no hydrogen 2.789 N/A ASP 330.A N PHE 327.A O no hydrogen 3.144 N/A ARG 331.A NE GLN 335.A OE1 no hydrogen 2.997 N/A ARG 331.A NH2 GLN 335.A OE1 no hydrogen 3.448 N/A LEU 332.A N ASP 330.A OD1 no hydrogen 2.946 N/A LYS 334.A N ASP 330.A O no hydrogen 3.089 N/A GLN 335.A N ARG 331.A O no hydrogen 2.901 N/A THR 336.A N LEU 332.A O no hydrogen 2.939 N/A ILE 337.A N PHE 333.A O no hydrogen 2.935 N/A ALA 338.A N LYS 334.A O no hydrogen 2.934 N/A GLY 339.A N GLN 335.A O no hydrogen 2.898 N/A ASP 340.A N THR 336.A O no hydrogen 2.925 N/A PHE 341.A N ILE 337.A O no hydrogen 2.955 N/A GLU 342.A N ALA 338.A O no hydrogen 2.903 N/A TYR 343.A N GLY 339.A O no hydrogen 2.921 N/A PHE 344.A N ASP 340.A O no hydrogen 2.961 N/A LEU 345.A N PHE 341.A O no hydrogen 2.870 N/A